期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 466, 期 -, 页码 75-80出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.06.085
关键词
Laser additive manufacturing; Soft magnetic; Laser power; Microstructure
资金
- National Natural Science Foundation of China [51775127, 51575118]
- National Basic Research Program of China (973 Program) [61328303]
- Natural Science Foundation of Heilongjiang Province [E2018020]
- Fundamental Research Funds for the Central Universities [HEUCFG201838]
Laser additive manufacturing (LAM) is a novel method for processing compositionally graded alloys and becomes increasingly important in the context of next-generation manufacturing technology. In this work, (Fe60Co35Ni5)(78)Si6B12Cu1Mo3 soft magnetic alloys with different laser power were designed and processed by the LAM. The magnitudes of magnetic properties were analyzed, and the relationships among compositionmicrostructure-magnetic properties assessed. Results show that the (Fe60Co35Ni5)(78)Si6B12Cu1Mo3 alloys by LAM exhibits relative uniform microstructure and comparable magnetic property compared with those conventional processed alloys. The bcc dominated microstructures exhibit a substantially higher saturation magnetization (Ms). With the increase in power, the average grain size of the alloy increased slightly and the increasing volume fraction of the Fe-Si phase leaded to the enhancement of magnetization. The (Fe60Co35Ni5)(78)Si6B12Cu1Mo3 alloys with laser power of 3000 W exhibits the highest Ms (199 emu/g). The appearance of Fe3B results in coarse dendrites and high coercivity (Hc) in the multiple re-heating cycles.
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